Able to host Zombies server for friends, But only some maps work, Others get this error:

[Shoongy]

I have no problem running MP and ZM dedi servers but when myself or my friend tries to join on maps Mob of the dead, Tranzit, or Origins, we are unable to connect and get the error message: Server Disconnected - EXE_CLIENT_FIELD_MISMATCH. This happens to only those Zombies maps. Am i doing anything wrong with the gamemode? I have the following to load TranZit with no success, as well as the other two maps.

sv_maprotation "gametype zclassic loc processing map zm_transit